Description*Please see the photos and buy only if you are satisfied with the item.If you have any concerns about the product, please contact us directly.Manufacturer:PioneerModel Number:Exclusive M4Type Class-A Stereo Power AmplifierCircuit TypeDifferential 1-stage PP drive2-stage Darlington quadruple PPPure complementary OCL system(Class-A operation)Effective output 50W+50W (8?, 20Hz-20kHz, B.C.D.)Harmonic distortion ratio 0.1% or less (at RMS output)0.03% or less (at 1W output)Intermodulation distortion ratio 0.1% or less (at RMS output)0.03% or less (at 1W output)Output bandwidth 5Hz to 70kHz (IHF, both channels driven)Frequency response 3Hz to 60kHz +0 -1dBInput sensitivity Input1, 2: 1V, 2VSubsonic filter8Hz(6dB/oct)Output terminalSpeaker(8?)Damping factor 30 or more (8?)Peak meter indication range 0.005W to 100W (-40dB to +3dB)Semiconductor transistors: 59ICs: 6Thyristor: 1Diodes and others: 60Power consumption 320WDimensions468mm (W) x 206mm (H) x 385mm (D)Weight 27.3kg ?Operation] Energized: NormalInput/Output: Rch seems a little weak against input.Panel operation: GoodMeter operation: Good ?Accessories] There are no accessories.ShippingItem will be shipped via FEDEX.Please allow 5 business days for handling time.Shipping from Japan.It takes approximately 4 to 7 days for the product to arrive it is shipped.International Buyers - Please Note:Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.Thank you for your understanding.